feat(Structures): Generator function

src/Player.ts

@@ -25,6 +25,10 @@ class DiscordPlayer extends EventEmitter {
     getQueue(guild: Snowflake) {
         return this.queues.get(guild);
     }
+
+    *[Symbol.iterator]() {
+        yield* Array.from(this.queues.values());
+    }
 }
 
 export { DiscordPlayer as Player };

src/Structures/Playlist.ts

@@ -9,6 +9,10 @@ class Playlist {
         this.player = player;
         this.tracks = tracks ?? [];
     }
+
+    *[Symbol.iterator]() {
+        yield* this.tracks;
+    }
 }
 
 export { Playlist };

src/Structures/Queue.ts

@@ -57,6 +57,10 @@ class Queue {
     play() {
         throw new Error("Not implemented");
     }
+
+    *[Symbol.iterator]() {
+        yield* this.tracks;
+    }
 }
 
 export { Queue };